Samsung AR09JSFDHWKNCV Service Manual page 58

10-2-3 Indoor Eva-in temperature sensor error
Indoor display
3-LED DISPLAY
LED1 LED2
◎ ◎
LED ON ◎ LED BLINKING
1. Checklist :
1) Is the indoor units temperature sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
2. Troubleshooting procedure
Detach the assembled sensor from the PBA sensor
connector and measure the sensor resistance with
ohmmeter(tester)
Is the sensor resistance value
#3-#4 and #5-#6 10kohm±3% at the room
temperature of 25
Connect the sensor to PBA connector (6piin)
Is the connection of power cable
supply power and measure the voltage of #3-#4
and communication cable normal?
and #5-#6 in the connector
Below 0.5V or Over 4.5V?
Micom error or connector check
Exchange the indoor PBA
10-4
7-SEG DISPLAY
LED3
E122,E123
LED OFF
YES
NO
YES
DESCRIPTION
Indoor MID, Indoor IN PIPE-TH sensor error
NO
Sensor Replace
Sensor resistance value : 20°C- 12.09kohm
YES
Exchange the indoor PBA
30°C - 8.31kohm
35°C - 6.94kohm
40°C- 5.83kohm
Samsung Electronics